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/ˈkweɪ.zɑː/ · noun
(astronomy) An extragalactic object, starlike in appearance, that is among the most luminous and (putatively) the most distant objects in the universe..
Use quasar when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Quasar means (astronomy) An extragalactic object, starlike in appearance, that is among the most luminous and (putatively) the most distant objects in the universe..
Common synonyms include Q, QSO, quasi-stellar object, quasistellar object.
The opposite depends on the specific sense.
Use quasar where its definition matches the intended context.
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